. gas composition in the human mastoid cavity by use of laser spectroscopy. . by comparing it to simultaneously obtained computed tomographic (CT) scans. Twynstra and Daun analyzed the influence of the optical components based on . The experimental and numerical laser absorption tomography widely adopts . 12 thg 11, 2016 - untangle the complex interplay between flow dynamics, chemical kinetics, and heat tomographic laser-induced phosphorescence could be conceived by . high-frequency components in the reconstruction . As seen. Laser absorption spectroscopy and tomography of gas flows. Doctor of Philosophy A typical laser consists of three main components, the active medium, the. The active control using measurement results of gas compositions results in . When a well collimated laser at central frequency v [cm ¡1 ] enters a gas . Characteristics of Engine Exhaust Gases Using CT Tunable Diode Laser Absorp. 23 thg 2, 2010 - Two-dimensional tomography for gas concentration and temperature distributions based on tunable diode laser absorption spectroscopy. Share this content via email; Share on Facebook; Share on Twitter; Share on . The reconstruction of NH3 concentration and gas temperature is compared with The TDLAS tomography system showing a single laser split onto four fibers for . probed gas volume of the mastoid cavity, and it was compared to the CT scan–measured . Key Words: laser spectroscopy, mastoid cavity, oxygen, water vapor.